Window repair in Northern Liberties and Fishtown

These two river-side neighborhoods grew around mills and factories, and the older rowhouses are still mixed in with recent construction.

The buildings

Northern Liberties and Fishtown sit along the Delaware River north of Old City. Fishtown takes its name from the shad fishing that once supported the area. The older rows were built for mill and dock workers and have modest brick fronts with simple wood windows, while recent townhouses and condos on former industrial lots use modern window systems.

Old and new on the same block

Original wood: Remaining 19th-century rowhouses often keep double-hung wood windows that have been painted many times.
New infill: Newer buildings may have vinyl or aluminum windows with sealed glass units, where repair means replacing a sealed unit or hardware rather than carpentry.
City review: Some blocks have local historic designation. Check the address with the Philadelphia Historical Commission, since designation depends on the property.

Problems that come up

Water stains where old flat roofs or party-wall flashing leak.
Windows that stick after renovation dust and paint.
Failed seals on newer double-pane windows that fog between the panes.
Drafts through gaps where a previous replacement was fitted poorly.

Which repairs help most

If the house is an older brick row with original wood sash, the first steps are usually freeing the sash, new weatherstripping and re-glazing loose panes. For newer buildings with failed seals, ask whether only the glass unit can be swapped.

Official local sources

These outside pages are worth a look before you hire anyone for work in Northern Liberties and Fishtown.

Nearby areas

Society Hill and Old City

Historic townhouse sash, Commission review and lead-safe repair.

South Philadelphia

Block-long brick rows, shared walls and old sash.

Guides that go with this page

Sticking and painted-shut sash

Freeing sash, replacing sash cords and balances, and ending the rattle.

Rot, glass and glazing

What can be patched, what must be rebuilt, and how glass is reset.

Storm windows and weatherstripping

Comfort upgrades that leave the original sash in place.

Questions people ask

Can failed seals in newer windows be fixed?

Usually by replacing the sealed glass unit. Fogging between the panes means the seal failed, and the glass cannot be cleaned from outside.

Is every old rowhouse here in a historic district?

No. Designation depends on the property or block, so check with the Philadelphia Historical Commission.

Who handles permits?

L&I issues building permits in Philadelphia. Simple repair often does not need one, but structural or opening changes do.